NZQA registered unit standard
20461 version 3
Page 1 of 7
Title
Demonstrate knowledge of bitumen gangbar sprayers and operations
Level
4
Credits
10
Purpose
People credited with this unit standard are able to demonstrate
knowledge of: features of bitumen gangbar sprayers; health
and safety hazards and adverse effects on the environment
associated with bitumen gangbar sprayers and describe
requirements for their control; E/2 Specification and quality
assurance for gangbar sprayer operations; preparations for,
and operation of, sprayer transfer, heating, circulating, and
blending equipment on a gangbar sprayer; gangbar sprayer
equipment inspection and maintenance; and bitumen gangbar
sprayer support plant.
Classification
Pavement Surfacing > Chipseal Surfacing
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 20450, Describe safe heating, blending, modification, and
transfer of bulk bituminous liquids, or demonstrate equivalent
knowledge and skills.
Explanatory notes
1
The following legislation and requirements apply to this unit standard, and must be
complied with:
Hazardous Substances and New Organisms Act 1996;
Land Transport Rule: Dangerous Goods 2005 (Rule 45001/1) amendment 2010,
45001/2;
BCA E/2:97 Performance of Bitumen Distributors (E/2 Specification), Roading New
Zealand, available on request at http://www.roadingnz.org.nz;
The Safe Handling of Bituminous Materials Used in Roading – Code of Practice RNZ
9904:2006, available for purchase at http://www.roadingnz.org.nz/pubs.html;
The Bitumen Safety Handbook; Roading New Zealand, available for purchase at
http://www.roadingnz.org.nz/pubs.html;
Chipsealing in New Zealand, New Zealand Transport Agency, available at
http://www.nzta.govt.nz/resources/chipsealing-new-zealand-manual/;
Gangbar sprayer manufacturer’s manual.
Any legislation or other requirements superseding any of the above will apply,
pending the review of this unit standard.
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NZQA registered unit standard
20461 version 3
Page 2 of 7
2
Assessment against this unit standard must be based on evidence from a workplace
context.
3
Definitions
Company procedures refers to all documented policies, procedures and
methodologies of the candidate’s employer at the time of training including but not
limited to those relating to health, safety, environment, quality, and operations.
Gangbar sprayer means tank wagon specifically built for automatically controlled
spraying of bituminous materials on pavement surfaces. The equipment on a
gangbar sprayer includes a handbar.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of features of bitumen gangbar sprayers.
Evidence requirements
1.1
Safety equipment is located and identified on a gangbar sprayer and its
operation is described in accordance with the gangbar sprayer manufacturer’s
manual, and Code of Practice RNZ 9904:2006.
1.2
Gangbar sprayer tank components are located and identified, and their purpose
and operation are described in accordance with the gangbar sprayer
manufacturer’s manual.
Range
components include but are not limited to – access hatch, baffle,
internal pipework, vents, heaters, valves, dipstick, thermometer
pockets.
1.3
Bitumen heating, pumping, blending, and flushing systems and their controls
are located and identified, and their purpose and operation are described in
accordance with The Bitumen Safety Handbook and the gangbar sprayer
manufacturer’s manual.
1.4
Bitumen spraying equipment and its controls are located and identified, and
their purpose and operation are described in accordance with The Bitumen
Safety Handbook and the gangbar sprayer manufacturer’s manual.
Range
1.5
equipment includes but is not limited to – gangbar, handbar;
controls include but are not limited to – application rate, number of
nozzles, gangbar height, gangbar width, pump speed, road speed,
air pressure, valves.
Sensors and process control equipment are located and identified on a sprayer
and their functions are described in accordance with the gangbar sprayer
manufacturer’s manual.
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NZQA registered unit standard
1.6
20461 version 3
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Bitumen gangbar sprayers are described in terms of operational limitations.
Range
includes but is not limited to – tank volume, spraying width, travel
speed relative to nozzle output, truck length and width, rear axle
configuration, accuracy of binder application rate control, length of
handbar hose.
Outcome 2
Demonstrate knowledge of health and safety hazards and adverse effects on the
environment associated with bitumen gangbar sprayers and describe requirements for
their control.
Range
operations include – transferring, heating, blending, spraying.
Evidence requirements
2.1
Health hazards and the procedures and equipment to control them are
described in accordance with Code of Practice RNZ 9904:2006 and company
procedures.
2.2
Safety hazards and the procedures and equipment to control them are
described in accordance with Code of Practice RNZ 9904:2006 and company
procedures.
Range
includes but is not limited to – access into tanks.
2.3
Adverse effects on the environment and the procedures and equipment to
control them are described in in accordance with Code of Practice RNZ
9904:2006 and company procedures.
2.4
Monitoring of health, safety, and adverse effects on the environment is
described in terms of company procedures.
2.5
Causes and prevention of water contamination of hot bitumen are described in
accordance with Code of Practice RNZ 9904:2006 and company procedures.
Range
includes but is not limited to – process of adding additives.
2.6
Procedures for determining whether tanks and equipment have been
contaminated with water and for dealing with water contamination of hot
bitumen are described in accordance with Code of Practice RNZ 9904:2006 and
company procedures.
2.7
Criteria for the selection of suitable sites for transferring, heating, and blending
bitumen in the field are described in accordance with company procedures.
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NZQA registered unit standard
2.8
20461 version 3
Page 4 of 7
Procedures for dealing with emergencies during transfer, circulation, heating, or
spraying of bitumen are described in terms of personal safety, public safety,
environmental safety, fire fighting, control of spillage, security, and
communications, and in accordance with Code of Practice RNZ 9904:2006 and
company procedures.
Range
emergencies include but are not limited to – explosion, fire,
bitumen spill, tank rupture, electrical fault, mechanical malfunction.
Outcome 3
Demonstrate knowledge of E/2 Specification and quality assurance for gangbar sprayer
operations.
Range
excludes technical details of testing.
Evidence requirements
3.1
Safety and performance requirements for annual and triennial certification of
bitumen gangbar sprayers are outlined in accordance with E/2 Specification.
Range
performance includes but is not limited to – transverse distribution,
longitudinal distribution, application rate, instrument calibration,
dipstick calibration, road speed test.
3.2
On-going compliance with performance requirements of E/2 Specification is
explained in terms of critical maintenance required between certifications.
3.3
Quality assurance requirements for the operation of bitumen gangbar sprayers
are described in accordance with company procedures.
Outcome 4
Demonstrate knowledge of preparations for, and operation of, sprayer transfer, heating,
circulating, and blending equipment on a gangbar sprayer.
Evidence requirements
4.1
Preparations for operating transfer equipment are described in accordance with
company procedures, Code of Practice RNZ 9904:2006, and the gangbar
sprayer manufacturer’s manual.
Range
4.2
transfer from – storage tank, road tank wagon;
transfer to – storage tank or road tank wagon.
Operation of transfer equipment is described in accordance with The Bitumen
Safety Handbook and the gangbar sprayer manufacturer’s manual.
Range
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transfer of – hot bitumen, cutback bitumen, emulsified bitumen;
transfer from – storage tank, road tank wagon;
transfer to – storage tank or road tank wagon.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
20461 version 3
Page 5 of 7
4.3
Preparations for, and operation of heating and circulating equipment are
described in accordance with The Bitumen Safety Handbook and the gangbar
sprayer manufacturer’s manual.
4.4
Parameters for heating bulk bituminous liquids are detailed in accordance with
spray temperature charts in Code of Practice RNZ 9904:2006, and the effects
on binder of incorrect operation of the heating equipment are explained.
Range
4.5
parameters include but are not limited to – spraying temperatures,
limitations on heating rates, maximum temperatures;
effects – too rapid heating, slow overheating, rapid overheating;
liquids – straight bitumen 80/100, straight bitumen 180/200,
5 parts per 100 kerosene, 10 parts per 100 kerosene, 20 parts per
100 kerosene, polymer-modified bitumen, standard cationic
emulsion, high binder content polymer-modified emulsion.
Preparations for, and operation of, blending equipment are explained in
accordance with The Bitumen Safety Handbook company procedures, and the
gangbar sprayer manufacturer’s manual.
Range
includes but is not limited to – restrictions, precautions, blending of
additives on site.
Outcome 5
Demonstrate knowledge of gangbar sprayer equipment inspection and maintenance.
Evidence requirements
5.1
Maintenance inspection of gangbar sprayer equipment is described in
accordance with The Bitumen Safety Handbook and the gangbar sprayer
manufacturer’s manual.
Range
inspection includes but is not limited to – first aid equipment, tank,
valves, bitumen pump, pipework, hoses, gangbar, spray nozzles,
bitumen filter, heating systems, bitumen pump, sensors, controls,
hydraulic systems.
5.2
Requirements for reporting of specialist maintenance requests are described in
accordance with company procedures.
5.3
Processes for clearing blockages in gangbar sprayer valves and pipework are
described in accordance with Code of Practice RNZ 9904:2006 and company
procedures.
5.4
Processes for emptying, flushing, and decontaminating gangbar sprayer
equipment, and disposal of waste materials are described in accordance with
company procedures, legislation, The Bitumen Safety Handbook, and the
gangbar sprayer manufacturer’s manual.
Range
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equipment – tank, hoses, pipes, bar, handbar.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
20461 version 3
Page 6 of 7
Outcome 6
Demonstrate knowledge of bitumen gangbar sprayer support plant.
Range
support plan – bitumen storage, heating, and blending facility, bitumen tank
wagon.
Evidence requirements
6.1
Support plant is described in terms of layout.
6.2
Support plant is described in terms of operation.
Replacement information
This unit standard and unit standard 20451 replaced unit
standard 1497.
Planned review date
31 December 2016
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
27 October 2005
31 December 2013
Revision
2
25 May 2007
31 December 2013
Review
3
15 March 2012
N/A
Consent and Moderation Requirements (CMR) reference
0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
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 New Zealand Qualifications Authority 2016
NZQA registered unit standard
20461 version 3
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Comments on this unit standard
Please contact Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
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